This is someone's custom sail barge that they put on ebay:
It's a very nice-looking piece, but also serves to highlight the limitations Hasbro has in attempting to make one of these.
- This seller is asking $4k for it, plus $250 shipping.
- It's 5 feet long, yet still not actually very big inside, note the lack of a Jabba figure.
- There are no exciting play features.
So as cool as this piece is, and it is very cool, it's also a roadsign for what won't work as a production piece. This thing is double the length of the BMF, if you try to cut it down to the size of the largest-ever SW vehicle there, you would end up with something that either cannot fit many figures OR doesn't look enough like the sail barge. You also would have no play features of note, aside from a few opening hatches. So basically, you'd have a misshapen set replica, which just doesn't seem like it has a lot of profit potential, unfortunately.
I really like the fact that this thing exists, that someone had the patience and passion to do it; but am bummed at the same time by its existence proving what Hasbro's been saying, that it's not likely to be feasible.